nickyburnell Posted August 12, 2015 Report Share Posted August 12, 2015 Hi all. Got an Ossa MAR and a Gas Gas TXT250 (99). The Ossa will do tiny throttle openings, soft power at nearly a stand still. The Gas Gas is a little fut fut at this speed, needing clutch control. Before I start messing with carb jettings on the Gas Gas, is this normal, just the way a modern is? Thanks Quote Link to comment Share on other sites More sharing options...
suzuki250 Posted August 12, 2015 Report Share Posted August 12, 2015 I think you need to start messing, I’ve got a gasser and a few twinshocks and the gasser is better by far! Quote Link to comment Share on other sites More sharing options...
2stroke4stroke Posted August 12, 2015 Report Share Posted August 12, 2015 The modern bike is designed to be ridden on the clutch. Nobody ever had a strong enough wrist to ride an Ossa that way :-) 2 Quote Link to comment Share on other sites More sharing options...
lineaway Posted August 12, 2015 Report Share Posted August 12, 2015 First you never needed the clutch on an MAR. It had enough flywheel to run a dead idle. As long as you could jet it. On the `99 I would make sure you have a 10t counter shaft sprocket as they ran fast stock. On the other hand the clutch on modern bikes are amazingly light and easy thanks to hydraulics! Two different turds. Quote Link to comment Share on other sites More sharing options...
nickyburnell Posted August 13, 2015 Author Report Share Posted August 13, 2015 Flywheel weight, thats it! Thanks Quote Link to comment Share on other sites More sharing options...
johnsandywhite Posted August 13, 2015 Report Share Posted August 13, 2015 The modern bike is designed to be ridden on the clutch. Nobody ever had a strong enough wrist to ride an Ossa that way :-) I have to agree with that. But I don't agree that the Ossa MAR would tootle along on a small throttle. The ONLY bike I ever had that did that was the Bultaco 325 & 350, hence the reason I loved them. But I much prefer the modern hydraulic clutch & brakes on my JTG300. 1 Quote Link to comment Share on other sites More sharing options...
nickyburnell Posted August 13, 2015 Author Report Share Posted August 13, 2015 Both MAR's I've owned with Mikuni's and original carbs have managed almost no throttle at all (tickover even if set higher) and then taken full throttle from that (below) walking pace. From the girlfriends perspective, a new rider, never ridden bike before, she prefers and has more control with the cable clutch and brakes of the Ossa. Quote Link to comment Share on other sites More sharing options...
jon v8 Posted August 13, 2015 Report Share Posted August 13, 2015 I would say scrap or sell the Gasser, I have only once ridden an Ossa, ( But it was the right one...) The Ossa if set up properly will be far more rewarding. Quote Link to comment Share on other sites More sharing options...
nickyburnell Posted August 14, 2015 Author Report Share Posted August 14, 2015 Gas Gas just for fun, agreed though, trick riding aside the Ossa is much more rewarding Quote Link to comment Share on other sites More sharing options...
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